US5771851A - Variably tuned Helmholtz resonator with linear response controller - Google Patents

Variably tuned Helmholtz resonator with linear response controller Download PDF

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Publication number
US5771851A
US5771851A US08/902,454 US90245497A US5771851A US 5771851 A US5771851 A US 5771851A US 90245497 A US90245497 A US 90245497A US 5771851 A US5771851 A US 5771851A
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United States
Prior art keywords
helmholtz resonator
tuning
internal passage
tubular connection
engine speed
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Expired - Lifetime
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US08/902,454
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English (en)
Inventor
Ian R. McLean
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Siemens Canada Ltd
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Siemens Electric Ltd
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Priority to US08/902,454 priority Critical patent/US5771851A/en
Assigned to SIEMENS ELECTRIC LIMITED reassignment SIEMENS ELECTRIC LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MCLEAN, IAN R.
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Publication of US5771851A publication Critical patent/US5771851A/en
Priority to EP98113762A priority patent/EP0894970A3/de
Priority to KR1019980030262A priority patent/KR19990014223A/ko
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1205—Flow throttling or guiding
    • F02M35/1222—Flow throttling or guiding by using adjustable or movable elements, e.g. valves, membranes, bellows, expanding or shrinking elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1255—Intake silencers ; Sound modulation, transmission or amplification using resonance
    • F02M35/1261—Helmholtz resonators

Definitions

  • Helmholtz resonators have been employed in internal combustion engine induction systems to reduce engine noise.
  • Such resonators consist of a fixed volume chamber connected to an induction system duct by a tubular connection or neck.
  • the frequency associated with the primary order of engine noise is directly proportional to engine speed, but a fixed geometry Helmholtz resonator is only effective at attenuating noise in a narrow frequency range, such that the resonator would be ineffective in attenuating primary order noise over much of the complete range of engine speeds encountered during normal operation of a vehicle powered by the engine.
  • a Helmholtz resonator be variably tuned in accordance with engine speed in order to increase the range of engine speeds over which the resonator will be effective to suppress primary order engine noise.
  • This approach is described in U.S. Pat. No. 4,539,947 which shows a movable element mounted within the tubular connection or neck between the duct and the Helmholtz chamber. The position of the movable element is varied in accordance with engine speed to vary the effective cross sectional area and/or length of the tubular connection. This has the effect of changing the resonant frequency of the Helmholtz resonator so as to be effective over a wider range of engine speeds.
  • the above-recited object of the present invention is achieved by providing a tuning plate pivoted to sweep across the cross section of a tubular connection between the resonator chamber and a duct with which the resonator is associated.
  • the tubular connection has a particular curved roughly triangular cross sectional shape produced by mapping the bisector of a triangle onto the radius of a circle, such that incremental angular movements of the plate produce a proportionate change in the open area of the tubular connection.
  • the tubular connection extends down into the resonator chamber and is truncated such that end corrected effective length remains effectively constant as the tuning plate is swept across the width of the tubular connection.
  • the end result is a linear relationship between the angular position of the tuning plate and the resonant frequency of the Helmholtz resonator.
  • timing plate in correspondence to an engine speed signal, noise suppression across most of the engine operating speed range can be achieved.
  • FIG. 1 is a plane view of the tunable Helmholtz resonator according to the invention, with a diagrammatic representation of the associated engine components.
  • FIG. 2 is a side elevational view of a tunable Helmholtz resonator and connected duct transition according to the present invention, together with a diagrammatic representation of the associated control components.
  • FIG. 3 is a side elevational view of the resonator and duct transition shown in FIG. 1 from the reverse side.
  • FIG. 3A is an end view of the transition pipe.
  • FIG. 4 is a perspective view of the resonator and duct transition shown in FIG. 1 with a top cover plate removed.
  • FIG. 5 is a diagrammatic plan view of the resonator showing the relationship between the tuning plate and tubular connection opening.
  • FIG. 6 is a dimensioned plan view of the resonator and connection opening.
  • FIG. 7 is a dimensioned side elevational diagram of the truncation of the tubular connection.
  • the present invention comprises a linearly tuneable Helmholtz resonator 10, installed in the induction system of an engine, intermediate the engine air cleaner 12 and intake manifold 14.
  • a square to round transition duct piece 16 enables a connection at either end to rounds duct connecting to the engine components.
  • a solenoid actuator 18 drivingly engages a rotary tuning shaft 20 so as to swing a tuning plate 22 about the axis of the tuning shaft 20.
  • Driver signals are applied to a controller 24 to cause the solenoid actuator 18 to rotate the tuner shaft 20, the driver signals generated from the vehicle ECU 26, which in turn receives signals from an engine speed transducer 28.
  • the angular position of the tuning shaft 20 and plate 22 is thereby set in correspondence to engine speed.
  • the Helmholtz resonator 10 comprises a fixed volume chamber 11, defined by a hollow cylindrical housing 30 closed off at its top and bottom with cover plates 32, 34.
  • a roughly triangularly shaped opening 36 in the top cover plate 32 has a correspondingly shaped tubular connection or neck 38 aligned therewith and affixed to the inner surface of top cover plate 32.
  • Transition duct piece 16 has an opening matching the opening 36A in the top plate 32 and aligned therewith, the flat bottom wall 40 fixedly attached to the top plate 32.
  • the chamber 11 is in fluid communication with the interior 42 of the duct transition piece 16 via an internal passage 36B of the tubular connection 38 recessed into the chamber 11.
  • the tubular connection 38 is supported on the bottom cover plate 34 with a series of posts 44 projecting upwardly and engaging respective sections of the bottom edges of the tubular connection 38.
  • the tuning plate 22 is received in a slot 46 extending partially through the connector 38 adjacent its upper end so as to be able to partially block to a varying degree the internal passage 36B defined within the tubular connection 38.
  • the bottom of the tubular connection 38 is truncated in order to affect the effective length of the neck defined by the connection 38 as the tuning plate 22 is swung through the slot 46.
  • the geometry of the internal passage 36B of tubular connection 38 is configured such that a linear relationship is established between the cross sectional area of the internal passage 36B and angular position of the timing plate 22 in the range of partially blocking positions.
  • the resonant frequency of a Helmholtz resonator f R is given by:
  • ⁇ is a constant and ⁇ is the tuning variable.
  • the cross sectional area of the tubular connection 38, S will be the geometrical component which will be made variable.
  • the volume of the cavity 11 will be held fixed.
  • the design for the cross sectional area is shown in FIG. 5 for the tuning plate angle ⁇ .
  • the open area of the connector internal passage 36B is given by:
  • variable w can be expressed as:
  • ⁇ max 1.431 radians (i.e., 82°).
  • end-corrected tubular connector length L' can be expressed as:
  • the tubular connection 38 length L is to be fixed, i.e., independent of the tuning angle ⁇ . So, the tubular connection 38 length L must compensate for the end correction, i.e.,
  • the tuning plate angle is established by solenoid 18 which will be powered by a signal from the ECU 26 proportional to the engine speed.
  • the relationship between the frequency of the primary order engine noise and engine speed is given by:
  • N number of cylinders
  • the primary order engine noise is reflected back up the induction system toward the engine.
  • the primary order engine noise is thus not allowed to radiate out of the induction inlet continuously for all engine speeds corresponding to the range of resonant frequencies of the resonator.
  • this engine speed range for the current design is 1800 rpm-6000 rpm.
  • FIG. 6 depicts an actual geometry of the opening 36 in the top plate 32 (as well as the tubular connection 38).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Characterised By The Charging Evacuation (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
US08/902,454 1997-07-29 1997-07-29 Variably tuned Helmholtz resonator with linear response controller Expired - Lifetime US5771851A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US08/902,454 US5771851A (en) 1997-07-29 1997-07-29 Variably tuned Helmholtz resonator with linear response controller
EP98113762A EP0894970A3 (de) 1997-07-29 1998-07-23 Abgestimmter Helmholtzresonator mit Steuergerät mit lineärem Ausgang
KR1019980030262A KR19990014223A (ko) 1997-07-29 1998-07-28 선형 응답 제어기를 가진 가변 동조 헬름홀쯔 공명기

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/902,454 US5771851A (en) 1997-07-29 1997-07-29 Variably tuned Helmholtz resonator with linear response controller

Publications (1)

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US5771851A true US5771851A (en) 1998-06-30

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Country Status (3)

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US (1) US5771851A (de)
EP (1) EP0894970A3 (de)
KR (1) KR19990014223A (de)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19833326A1 (de) * 1998-07-24 2000-01-27 Opel Adam Ag Ansaugvorrichtung für eine Brennkraftmaschine
EP0989295A2 (de) * 1998-09-24 2000-03-29 Mannesmann VDO Aktiengesellschaft Sauganlage für eine Brennkraftmaschine
US6135079A (en) * 1996-05-08 2000-10-24 Filterwerk Mann & Hummel Gmbh Air intake system for an internal combustion engine
US6328011B1 (en) * 1999-05-29 2001-12-11 Filterwek Mann & Hummel Gmbh Suction pipe for the intake air of internal combustion engines with pressure-relieving sites for pressure valves
US6494290B1 (en) * 1997-10-01 2002-12-17 Filterwerk Mann & Hummel Gmbh Noise suppressor with a bypass resonator
US6684842B1 (en) 2002-07-12 2004-02-03 Visteon Global Technologies, Inc. Multi-chamber resonator
US6698390B1 (en) 2003-01-24 2004-03-02 Visteon Global Technologies, Inc. Variable tuned telescoping resonator
US6758304B1 (en) * 1999-09-16 2004-07-06 Siemens Vdo Automotive Inc. Tuned Helmholtz resonator using cavity forcing
US6792907B1 (en) 2003-03-04 2004-09-21 Visteon Global Technologies, Inc. Helmholtz resonator
US20050011699A1 (en) * 2003-07-14 2005-01-20 Yukihisa Horiko Muffler
US20050194207A1 (en) * 2004-03-04 2005-09-08 York International Corporation Apparatus and method of sound attenuation in a system employing a VSD and a quarter-wave resonator
US20050252716A1 (en) * 2004-05-14 2005-11-17 Visteon Global Technologies, Inc. Electronically controlled dual chamber variable resonator
US20060059801A1 (en) * 2004-09-15 2006-03-23 Quality Research Development & Consulting, Inc. Acoustically intelligent structures with resonators
US20060086564A1 (en) * 2004-10-21 2006-04-27 Visteon Global Technologies, Inc. Dual chamber variable geometry resonator
US7055484B2 (en) * 2002-01-18 2006-06-06 Carrier Corporation Multiple frequency Helmholtz resonator
US20070023230A1 (en) * 2005-07-27 2007-02-01 Mitsubishi Denki Kabushiki Kaisha Variable resonator
US20080066999A1 (en) * 2006-09-15 2008-03-20 John David Kostun Continuously variable tuned resonator
US20090007876A1 (en) * 2007-07-03 2009-01-08 Anthony Charles Arruda Air induction system with resonator bypass valve
US20090285432A1 (en) * 2008-05-05 2009-11-19 Schnitta Bonnie S Tunable frequency acoustic structures
US20110179795A1 (en) * 2009-07-08 2011-07-28 General Electric Company Injector with integrated resonator
US20110243761A1 (en) * 2010-03-31 2011-10-06 Rusty Darsey Pulsation Dampener for Gas Compressors Having Selectable Size Choke Openings
US20120045349A1 (en) * 2010-03-31 2012-02-23 Flat Line Pulsation Inc. Pressure pulsation dampener
US8418804B1 (en) 2011-12-20 2013-04-16 King Fahd University Of Petroleum And Minerals Multiple Helmholtz resonators
US8966903B2 (en) 2011-08-17 2015-03-03 General Electric Company Combustor resonator with non-uniform resonator passages
US9341375B2 (en) 2011-07-22 2016-05-17 General Electric Company System for damping oscillations in a turbine combustor
DE102016002747A1 (de) 2016-03-08 2017-09-14 Dw-Shipconsult Gmbh Variabler Resonatorschalldämpfer zur nachträglichen Einrüstung an Schiffsabgasrohre

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4375088B2 (ja) * 2004-03-31 2009-12-02 トヨタ紡織株式会社 可変消音器制御装置

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US4538556A (en) * 1983-07-11 1985-09-03 Toyota Jidosha Kabushiki Kaisha Air intake device of an internal combustion engine
US4539947A (en) * 1982-12-09 1985-09-10 Nippondenso Co., Ltd. Resonator for internal combustion engines
US4546733A (en) * 1983-03-22 1985-10-15 Nippondenso Co., Ltd. Resonator for internal combustion engines
US4592311A (en) * 1983-09-26 1986-06-03 Yamaha Hatsudoki Kabushiki Kaisha Intake system for two-cycle multi-cylinder engines
JPH01117919A (ja) * 1987-10-30 1989-05-10 Mazda Motor Corp エンジンの吸気装置
US5162621A (en) * 1990-10-16 1992-11-10 Siemens Automotive Limited Internal sidebranch resonator
US5267543A (en) * 1992-12-21 1993-12-07 Ford Motor Company Dual induction system for internal combustion engine
US5377629A (en) * 1993-10-20 1995-01-03 Siemens Electric Limited Adaptive manifold tuning
US5492089A (en) * 1993-09-24 1996-02-20 Sanshin Kogyo Kabushiki Kaisha Silencer for outboard motor
US5572966A (en) * 1994-09-30 1996-11-12 Siemens Electric Limited Method and composite resonator for tuning an engine air induction system

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JPH05195746A (ja) * 1992-01-17 1993-08-03 Toyota Motor Corp 騒音低減装置

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US4539947A (en) * 1982-12-09 1985-09-10 Nippondenso Co., Ltd. Resonator for internal combustion engines
US4546733A (en) * 1983-03-22 1985-10-15 Nippondenso Co., Ltd. Resonator for internal combustion engines
US4538556A (en) * 1983-07-11 1985-09-03 Toyota Jidosha Kabushiki Kaisha Air intake device of an internal combustion engine
US4592311A (en) * 1983-09-26 1986-06-03 Yamaha Hatsudoki Kabushiki Kaisha Intake system for two-cycle multi-cylinder engines
JPH01117919A (ja) * 1987-10-30 1989-05-10 Mazda Motor Corp エンジンの吸気装置
US5162621A (en) * 1990-10-16 1992-11-10 Siemens Automotive Limited Internal sidebranch resonator
US5267543A (en) * 1992-12-21 1993-12-07 Ford Motor Company Dual induction system for internal combustion engine
US5492089A (en) * 1993-09-24 1996-02-20 Sanshin Kogyo Kabushiki Kaisha Silencer for outboard motor
US5377629A (en) * 1993-10-20 1995-01-03 Siemens Electric Limited Adaptive manifold tuning
US5572966A (en) * 1994-09-30 1996-11-12 Siemens Electric Limited Method and composite resonator for tuning an engine air induction system

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6135079A (en) * 1996-05-08 2000-10-24 Filterwerk Mann & Hummel Gmbh Air intake system for an internal combustion engine
US6494290B1 (en) * 1997-10-01 2002-12-17 Filterwerk Mann & Hummel Gmbh Noise suppressor with a bypass resonator
DE19833326A1 (de) * 1998-07-24 2000-01-27 Opel Adam Ag Ansaugvorrichtung für eine Brennkraftmaschine
EP0989295A2 (de) * 1998-09-24 2000-03-29 Mannesmann VDO Aktiengesellschaft Sauganlage für eine Brennkraftmaschine
EP0989295A3 (de) * 1998-09-24 2000-11-15 Mannesmann VDO Aktiengesellschaft Sauganlage für eine Brennkraftmaschine
US6328011B1 (en) * 1999-05-29 2001-12-11 Filterwek Mann & Hummel Gmbh Suction pipe for the intake air of internal combustion engines with pressure-relieving sites for pressure valves
US6758304B1 (en) * 1999-09-16 2004-07-06 Siemens Vdo Automotive Inc. Tuned Helmholtz resonator using cavity forcing
US7055484B2 (en) * 2002-01-18 2006-06-06 Carrier Corporation Multiple frequency Helmholtz resonator
US6684842B1 (en) 2002-07-12 2004-02-03 Visteon Global Technologies, Inc. Multi-chamber resonator
US6698390B1 (en) 2003-01-24 2004-03-02 Visteon Global Technologies, Inc. Variable tuned telescoping resonator
US6792907B1 (en) 2003-03-04 2004-09-21 Visteon Global Technologies, Inc. Helmholtz resonator
US7255197B2 (en) * 2003-07-14 2007-08-14 Toyoda Boshoku Corporation Muffler
US20050011699A1 (en) * 2003-07-14 2005-01-20 Yukihisa Horiko Muffler
US20050194207A1 (en) * 2004-03-04 2005-09-08 York International Corporation Apparatus and method of sound attenuation in a system employing a VSD and a quarter-wave resonator
US20050252716A1 (en) * 2004-05-14 2005-11-17 Visteon Global Technologies, Inc. Electronically controlled dual chamber variable resonator
US7117974B2 (en) * 2004-05-14 2006-10-10 Visteon Global Technologies, Inc. Electronically controlled dual chamber variable resonator
US20060059801A1 (en) * 2004-09-15 2006-03-23 Quality Research Development & Consulting, Inc. Acoustically intelligent structures with resonators
US20060086564A1 (en) * 2004-10-21 2006-04-27 Visteon Global Technologies, Inc. Dual chamber variable geometry resonator
US20070023230A1 (en) * 2005-07-27 2007-02-01 Mitsubishi Denki Kabushiki Kaisha Variable resonator
US7334663B2 (en) * 2005-07-27 2008-02-26 Mitsubishi Denki Kabushiki Kaisha Variable resonator
US7690478B2 (en) 2006-09-15 2010-04-06 Visteon Global Technologies, Inc. Continuously variable tuned resonator
US20080066999A1 (en) * 2006-09-15 2008-03-20 John David Kostun Continuously variable tuned resonator
US20090007876A1 (en) * 2007-07-03 2009-01-08 Anthony Charles Arruda Air induction system with resonator bypass valve
US7484491B2 (en) 2007-07-03 2009-02-03 Visteon Global Technologies, Inc. Air induction system with resonator bypass valve
US20090285432A1 (en) * 2008-05-05 2009-11-19 Schnitta Bonnie S Tunable frequency acoustic structures
US9275628B2 (en) 2008-05-05 2016-03-01 Bonnie S. Schnitta Tunable frequency acoustic structures
US8789372B2 (en) 2009-07-08 2014-07-29 General Electric Company Injector with integrated resonator
US20110179795A1 (en) * 2009-07-08 2011-07-28 General Electric Company Injector with integrated resonator
US20120045349A1 (en) * 2010-03-31 2012-02-23 Flat Line Pulsation Inc. Pressure pulsation dampener
US8613607B2 (en) * 2010-03-31 2013-12-24 Fred Rusty Darsey Pressure pulsation dampener
US20110243761A1 (en) * 2010-03-31 2011-10-06 Rusty Darsey Pulsation Dampener for Gas Compressors Having Selectable Size Choke Openings
US9291157B1 (en) * 2010-03-31 2016-03-22 Fred Rusty Darsey Automated system for pressure pulsation dampening
US9341375B2 (en) 2011-07-22 2016-05-17 General Electric Company System for damping oscillations in a turbine combustor
US8966903B2 (en) 2011-08-17 2015-03-03 General Electric Company Combustor resonator with non-uniform resonator passages
US8418804B1 (en) 2011-12-20 2013-04-16 King Fahd University Of Petroleum And Minerals Multiple Helmholtz resonators
DE102016002747A1 (de) 2016-03-08 2017-09-14 Dw-Shipconsult Gmbh Variabler Resonatorschalldämpfer zur nachträglichen Einrüstung an Schiffsabgasrohre

Also Published As

Publication number Publication date
EP0894970A3 (de) 1999-12-22
EP0894970A2 (de) 1999-02-03
KR19990014223A (ko) 1999-02-25

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